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Research On The Measurements Of Gully Management Reclamation In The Ecological Restoration Area Of Qinshui Country

Posted on:2007-12-25Degree:MasterType:Thesis
Country:ChinaCandidate:G J RuanFull Text:PDF
GTID:2143360212473016Subject:Forestry
Abstract/Summary:PDF Full Text Request
Gully management in the ecologicae restortion project area in qingshui country .tianshui city of gansu prorince was use as reasearch object .By inwestagation and analy is measurements of management for gullies were analyed based on water resource soil ,soil and water loss,and charateristics of gullies.The mostly soil erosion in the ecological restoration area is water erosion. there are 10 channels in the ecological restoration area. According to the scale and developing of these channels, gully reclamation works are check dams. There were 75 check dams, whose kinds contained soil check dam, stone check dam and illow check dam. and vegetation measures were configured mainly on the slope erosion area. For one thing, the vegetation measures could control the soil erosion, for another they could promote the vegetation restoration. The channel can be divided 2 types by distributing and formation. One is called convergence type. And the other is called dencentralization type.1 convergence typeâ‘ A group of little check dams were constructed in the upper reacheas of the channel to deposit the sediment and control the development of the channel.â‘¡Stone check dams were constructed in the lower reacheas of the channel to control the sediment of the whole channel.2 dencentralization typeThe check dams were constructed step by step to control the sediment gradually, stop the developing of the channel, and form some flat alluvium as foundation for the next measure by vegetable.
Keywords/Search Tags:soil erosion, erosion gulley, gully reclamation, check dam
PDF Full Text Request
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